myCRED: Award points for WooCommerce purchase

/**
 * Award myCRED Points for WooCommerce Products
 * Will check for a custom post meta "mycred" for each
 * product in an order and award points according to it's
 * value.
 * Place this code either in your themes functions.php file
 * or in your custom plugin.
 * @requires myCRED 1.1 +
 * @version 1.0
 */
add_action( 'woocommerce_payment_complete', 'mycred_pro_add_points_for_product_purchase' );
function mycred_pro_add_points_for_product_purchase( $order_id ) {
    // If myCRED is not installed, bail
    if ( ! function_exists( 'mycred_get_settings' ) ) return;

    // Get Order
    $order = new WC_Order( $order_id );

    // Load Mycred
    $mycred = mycred();

    // Get items in order
    $items = $order->get_items();

    // Loop though items
    foreach ( $items as $item ) {

        // Get product ID
        $product_id = absint( $item['product_id'] );

        // Get our custom field
        $value = get_post_meta( $product_id, 'mycred', true );

        // If no value is set, continue to the next product
        if ( empty( $value ) ) continue;

        // Item quantity
        $count = 0;
        if ( ! empty( $item['qty'] ) )
            $count += $item['qty'];
        else
            $count ++;

        // Prep amount
        $value = $mycred->number( $value*$count );

        // Add points
        $mycred->add_creds(
            'store_topup',
            $order->user_id,
            $value,
            '%link_with_title%',
            $product_id,
            array( 'ref_type' => 'post' )
        );

    }
}